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(!!!!) (BEST SINGLE #1) 5U4GB Raytheon "O" getter NOS 1962 (59/40 and 60/40)
(!!!!) (Best Single #1) EF86 Telefunken Germany <> bottom NOS gray shield 1972 (3.1ma) (Neumann, Dachman, Lawson, Soundelux, Manley)
(!!!!) (Best Single #2) 12BH7A RCA NOS 1963 (10.6/11.6ma)
(!!!!) (BEST SINGLE #2) 5992=6V6GT Bendix used/very good 1950's (37.6ma) (rare)
(!!!!) (Best Single #2) 6SN7GTB RCA NOS 1957-1958 (8.8/9.6ma)
(!!!!) (Best Single #2) 7581A GE NOS 1979 (87ma)
(!!!!) (Best Single #2) ECC803S=12AX7 Telefunken Qualitex Ulm Germany <> bottom like new 1964 (1.3/1.5ma and Gm=1600/1800)
(!!!!) (Best Single #3) 7581A GE NOS 1979 (76ma)
(!!!!) (Best Single #3) EF86 Telefunken Germany <> bottom NOS gray shield 1972 (2.8ma) (Neumann, Lawson, Soundelux, Manley)
(!!!!) (Best Single 1956) 12AX7 GE Motorola tall gray ribbed plates "U" getter 1956 like new (Gm=1700/2000 and 1.6/2.1ma)
(!!!!) (Best Single 1958) 12AX7 GE tall gray ribbed plates "U" getter 1958 like new (Gm=1800/1800 and 1.3/1.3ma) 1% section balance
(!!!!) (Best Single 1958) 6922 Amperex Holland curved "D" getter 1958 NOS (16.2/17.8ma) (same sonics as pinched waist version)
(!!!!) (Best Single 1960) 12AX7 Amperex Bugle Boy Holland like new 1960 (Gm=1700/1800 and 1.1/1.3ma) 1-5% section balance
(!!!!) (Best Single 1960) 12AX7 GE tall gray ribbed plates "U" getter NOS 1960 (Gm=1700/1600 and 1.5/1.1ma)
(!!!!) (Best Single 1960) 12AX7 Westinghouse NOS gray pinched plates "D" getter 1960 (Gm=1700/1800 and 1.3/1.4ma)
(!!!!) (Best Single 1961) 12AX7 Amperex Bugle Boy Holland low hours/like new 1961 (Gm=1500/1500 and 0.9/1.0ma) 1-3% section balance
(!!!!) (Best Single 1961) 12AX7=ECC83 Philips Miniwatt Holland 1961 large "O" getter halo NOS (1.8/1.3ma and Gm=2100/1700)
(!!!!) (Best Single 1966) 12AX7=ECC83 Philips Holland NOS 1966 (2.1/1.9ma and Gm=2100/2100) (Highest mA and Gm)
(!!!!) (Best Single 1969) 6DJ8 IEC Mullard used/tests like new 1969 (18.2/18.0ma) 1-2% section balance (sweet midrange)
(!!!!) (Best Single) 12AX7=ECC83 Philips Holland NOS 1969 (1.0/1.1ma and Gm=1600/1600) 1-2% section balance
